Any widget can be added to a global dashboard. Thus, any kinds of information from a project or from the Sonar instance can be displayed at will.
Dashboard Shipped with Sonar
By default, Sonar is shipped with two global dashboards:
This dashboard includes one filter that lists all the projects of the Sonar instance:
This dashboard includes one filter that displays all the projects of the Sonar instance as a Treemap (size = number of lines, color = rules compliance):
one global dashboard: